Explain Absolute threshold.
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The absolute threshold is the lowest intensity of a stimulus that an organism can detect reliably. It represents the point at which the stimulus becomes consciously perceptible. This concept is fundamental in psychology and sensory research, defining the minimal amount of stimulation needed for an individual to detect a particular sensation. Below the absolute threshold, the stimulus goes unnoticed. The determination of absolute thresholds helps understand the sensitivity of sensory systems and is crucial in various fields, including vision, hearing, and touch, contributing to the comprehension of sensory perception and information processing.